Diana Westgate, MD, FAAD


Born in Saginaw, Michigan, Dr. Castanon was excited to settle back in West Michigan after completing her dermatology residency at Harvard Medical School. She and her husband Nate consider the lakefront their home, and recently adopted a Havachon puppy, Chula, who keeps them running in circles. On a personal level she enjoys reading, outdoor activities, musical theater, international cooking, travel, and experiencing new cultures. Dr. Castanon's clinical interests include pediatric dermatology, particularly vascular malformation, advances in melanoma, and women's dermatology.


Undergraduate Degree:
Hope College, MI

Medical School:
University of Michigan, MI

Dermatology Residency:
Harvard Medical School, MA

Certificates and Fellowships

Board Certified Dermatologist (American Board of Dermatology)

Professional Memberships

American Board of Dermatology
American Academy of Dermatology

Clinic Location

4362 Cascade Road SE Suite 206
Grand Rapids, MI 49546
1005 W. Green Street, Suite 200
Hastings, MI 49058